LTE Drop Call Optimization - PUSCH DTX detection

LTE RF Optimization Training

LTE Drop Call Optimization - LTE Uplink PUSCH DTX detection for scheduled uplink data - Huawei settings

during the Uplink data transmission, the eNodeB send an uplink grant to UE on the PDCCH channel using DCI format 0, the most important information in the uplink grant are:
the allocated PRBs on PUSCH that will be used by the UE to transmits the data in uplink, and the Modulation and coding scheme MCS that should be used by the UE to transmit the Uplink data.

then the UE can transmit the data on the allocated PRBs on PUSCH 4 ms after the grant message.

the eNodeB expects to receive Uplink data transmission on the scheduled PRBs.

If signal from UE cannot be detected, PUSCH DTX is declared, the detection of the radio link problem by the Uplink scheduler is based on the comparison of Uplink grant assignment, and the DTX detection on PUSCH for the assigned PRBs.


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